#-------------------------------------------------------------
#
# (C) Copyright IBM Corp. 2010, 2015
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
#-------------------------------------------------------------

args <- commandArgs(TRUE)
options(digits=22)

library("Matrix")

A <- as.matrix(readMM(paste(args[1], "A.mtx", sep="")))

m = nrow(A);
S = sort(A)
q25d=m*0.25
q75d=m*0.75
q25i=ceiling(q25d)
q75i=ceiling(q75d)
iqm = sum(S[(q25i+1):q75i])
iqm = iqm + (q25i-q25d)*S[q25i] - (q75i-q75d)*S[q75i]
iqm = iqm/(m*0.5)

miqm = as.matrix(iqm);

writeMM(as(miqm, "CsparseMatrix"), paste(args[3], "R", sep="")); 


